@article{TaniguchiYokoyamaShinanoetal.2015, author = {Taniguchi, Shusuke and Yokoyama, Ryohei and Shinano, Yuji and Ohkura, Masashi and Wakui, Tetsuya}, title = {エネルギー供給システムの設計および運用の階層的関係を考慮した最適化(多目的最適化におけるK-ベスト解の探索)}, journal = {エネルギー・資源学会第31回エネルギーシステム・経済・環境コンファレンス講演論文集}, pages = {267 -- 272}, year = {2015}, abstract = {A mixed-integer linear programming method utilizing the hierarchical relationship between design and operation variables proposed to solve the optimal design problem of energy supply systems efficiently is extended to search K-best solutions in multiobjective optimization: At the upper level, the optimal values of design variables are searched by the branch and bound method with operation variables relaxed to continuous ones; At the lower level, the values of operation variables are optimized independently at the respective periods set for variations in energy demands by the branch and bound method with the values of design variables given tentatively during the search at the upper level. A weighting method is employed for multiobjective optimization, and a weighted sum of the annual total cost and primary energy consumption is adopted as the objective function to be minimized. A practical case study on the optimal design of a cogeneration system is conducted. The validity and effectiveness of the proposed method are clarified, and the trade-off relationship between the annual total cost and primary energy consumption is confirmed.}, language = {ja} } @phdthesis{Wohlfeil2015, author = {Wohlfeil, Benjamin}, title = {Integrated fiber grating couplers in silicon photonics}, doi = {10.14279/depositonce-4521}, year = {2015}, language = {en} } @inproceedings{BazziFioriniPokuttaetal.2015, author = {Bazzi, Abbas and Fiorini, Samuel and Pokutta, Sebastian and Svensson, Ola}, title = {Small linear programs cannot approximate Vertex Cover within a factor of 2 - epsilon}, booktitle = {Proceedings of FOCS}, arxiv = {http://arxiv.org/abs/1503.00753}, year = {2015}, language = {en} } @inproceedings{BraunPokutta2015, author = {Braun, G{\´a}bor and Pokutta, Sebastian}, title = {The matching polytope does not admit fully-polynomial size relaxation schemes}, booktitle = {Proceeedings of SODA}, arxiv = {http://arxiv.org/abs/1403.6710}, year = {2015}, language = {en} } @inproceedings{BraunPokuttaZink2015, author = {Braun, G{\´a}bor and Pokutta, Sebastian and Zink, Daniel}, title = {Inapproximability of combinatorial problems via small LPs and SDPs}, booktitle = {Proceeedings of STOC}, arxiv = {http://arxiv.org/abs/1410.8816}, year = {2015}, language = {en} } @inproceedings{Pokutta2015, author = {Pokutta, Sebastian}, title = {Information Theory and Polyhedral Combinatorics}, booktitle = {Proceedings of 53rd Annual Allerton Conference on Communication, Control, and Computing}, year = {2015}, language = {en} } @inproceedings{SongXiePokutta2015, author = {Song, R. and Xie, Y. and Pokutta, Sebastian}, title = {Sequential Sensing with Model Mismatch}, booktitle = {Proceedings of ISIT}, year = {2015}, language = {en} } @inproceedings{XieLiPokutta2015, author = {Xie, Y. and Li, Q. and Pokutta, Sebastian}, title = {Supervised Online Subspace Tracking}, booktitle = {Proceedings of Asilomar Conference on Signals, Systems, and Computers}, year = {2015}, language = {en} } @article{BrietDadushPokutta2015, author = {Bri{\"e}t, Jop and Dadush, Daniel and Pokutta, Sebastian}, title = {On the existence of 0/1 polytopes with high semidefinite extension complexity}, volume = {153}, journal = {Mathematical Programming B}, number = {1}, arxiv = {http://arxiv.org/abs/1305.3268}, pages = {179 -- 199}, year = {2015}, language = {en} } @article{BraunFioriniPokuttaetal.2015, author = {Braun, G{\´a}bor and Fiorini, Samuel and Pokutta, Sebastian and Steurer, D.}, title = {Approximation Limits of Linear Programs (Beyond Hierarchies)}, volume = {40}, journal = {Mathematics of Operations Research}, number = {3}, arxiv = {http://arxiv.org/abs/1204.0957}, pages = {179 -- 199}, year = {2015}, language = {en} }